– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Fri 06 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Fri 06 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Fri 06 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 44mm), mostly on Sat night. Becoming colder with a light covering of snow ,mostly falling on Mon morning. Freeze-thaw conditions (max 8°C on Sat morning, min -1°C on Sun night). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Wed morning. Becoming milder with heavy rain (total 68mm) on Wed night. Freeze-thaw conditions (max 6°C on Wed night, min -3°C on Mon night). Wind will be generally light. | ||||||||||||||||
Fri 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  |  | |  | | |  | |  | | |
mod. rain | light rain | light rain | light rain | heavy rain | rain shwrs | rain shwrs | snow shwrs | light snow | light snow | light snow | light snow | light snow | mod. snow | light snow | heavy rain | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 4 | 4 | 2 | 4 | 2 | 2 | 7 | 4 | — | 2 | |
6 | 1.8 | 0.4 | 1.2 | 34 | 0.5 | 0.3 | — | — | — | — | — | — | — | 13 | 25 | 30 | |
max °C | 5 | 7 | 8 | 8 | 8 | 5 | 4 | 0 | 0 | 0 | -2 | 0 | 1 | 2 | 2 | 4 | 6 |
min °C | 5 | 6 | 8 | 8 | 6 | 5 | 1 | -1 | -1 | -2 | -3 | -1 | 1 | 1 | 2 | 3 | 0 |
3 | 5 | 7 | 7 | 4 | 2 | -2 | -4 | -5 | -6 | -6 | -3 | -2 | -3 | -3 | -2 | -5 | |
1700 | 2500 | 2350 | 2200 | 1700 | 1100 | 1000 | 500 | 400 | 450 | 0 | 400 | 600 | 700 | 800 | 1000 | 1450 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 600 | 600 | 1700 | 600 | 600 | 600 | 600 | 650 | 600 | 600 | 600 | 550 | 550 |
 | — | — | 6:37 | — | — | 7:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:28 | — | — |
 | 5:59 | — | — | 6:00 | — | — | 7:01 | — | — | 6:04 | — | — | 6:05 | — | — | 6:07 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 44mm), mostly on Sat night. Becoming colder with a light covering of snow ,mostly falling on Mon morning. Freeze-thaw conditions (max 8°C on Sat morning, min -1°C on Sun night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed morning. Becoming milder with heavy rain (total 68mm) on Wed night. Freeze-thaw conditions (max 6°C on Wed night, min -3°C on Mon night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.